create virtual com port pair on wince6.0

Hello, I need a create a virtual com port on wince6.0 device(No BSP provide). so two application can use this com pair to communication with each other. Example. [login to view URL] 1. Two app,A and B 2. Virtual COM port pair COM6/COM7 A open COM6,B open COM7 B receives what A writes to COM6 A receives what B writes to COM7